Intra-Alveolar Haemorrhage Complicating IgA Vasculitis: A Case Report, Literature Review and Discussion of Treatment.

INTRODUCTION: Immunoglobulin A vasculitis (IgAV) is a small-vessel vasculitis with IgA-dominant immune deposits. IgAV frequently involves the skin, gastrointestinal tract, joints and kidneys. In contrast to other types of small-vessel vasculitis, IgAV is rarely complicated by intra-alveolar haemorrhage (IAH). METHODS/RESULTS: We describe a patient with relapsing bladder cancer who presented with IAH during the course of IgAV successfully treated with corticosteroids alone. CONCLUSION: This case report reminds us that IgAV can manifest with IAH. There are no robust data to support the systematic use of cyclophosphamide or plasma exchange as first-line therapy for IgAV with IAH. LEARNING POINTS: Intra-alveolar haemorrhage in IgA vasculitis is an uncommon but important condition.The treatment strategies for IgA vasculitis and intra-alveolar haemorrhage and their rare association are discussed with reference to the literature.